Sodomy is so basically and obviously unnatural that it's amazing we are even discussing it. One quick look at the human body shows how we were created (or evolved - if you prefer a non-Declaration of Independence term) to have sex. With poop-sex (other than the obvious "two plugs, no outlet" thing), you cannot kiss while doing it; you cannot embrace while doing it; one party must injure the other party to do it (my mom used to work at a motel and she said the sheets were always a disgusting mess after gay men rented a room); genitals are obviously not joined together, etc..
"Bad men cannot make good citizens. It is when a people forget God that tyrants forge their chains. A vitiated state of morals, a corrupted public conscience, is incompatible with freedom. No free government, or the blessings of liberty, can be preserved to any people but by a firm adherence to justice, moderation, temperance, frugality, and virtue; and by a frequent recurrence to fundamental principles." -Patrick Henry